| IDP | KIDP | Independence Airport | Independence | |
| - | KIIB | Independence Municipal | Independence | |
| - | - | Independence State | Independence | |
| - | - | Indian Creek Ranch | Deckerville | |
| - | - | Indian Creek Usfs | Indian Creek | |
| UTO | - | Indian Mountain Air Force Station | Utopia Creek | |
| - | KIDL | Indianola Municipal | Indianola | |
| - | - | Indiantown | Indiantown | |
| - | - | Industrial | Courtland | |
| HBB | - | Industrial Airpark | Hobbs | |
| OTM | KOTM | Industrial Airport | Ottumwa | |
| - | - | Ingalls Municipal | Ingalls | |
| - | KCTK | Ingersoll | Canton | |
| - | - | Inter Co | Irwin | |
| LJC | - | Intercontinental Airport | Louisville | |
| UMZ | - | Intermountain Municipal Airport | Mena | |
| - | - | International Peace Garden | Dunseith | |
| - | - | Inverness | Inverness | |
| - | - | Ione Municipal | Ione | |
| - | - | Ionia Co | Ionia | |
| ECA | - | Iosco County Airport | East Tawas | |
| IOW | KIOW | Iowa City Airport | Iowa City | |
| IFA | KIFA | Iowa Falls Airport | Iowa Falls | |
| IRB | - | Iraan Municipal Airport | Iraan | |
| - | - | Iron Co | Crystal Falls | |
| - | - | Ironhead | Sanger | |
| - | - | Isabel Municipal | Isabel | |
| - | - | Isbell | Ft Payne | |
| JHC | - | Island Heliport | Garden City | |
| - | - | Islesboro | Islesboro | |
| - | - | Iuka | Iuka | |
| KIB | - | Ivanof Bay Sea Plane Base | Ivanof Bay | |
| - | - | Iverson | Mc Gregor | |
| IVH | - | Ivishak Airport | Ivishak | |
| - | - | J-Z | Almira | |
| CUB | KCUB | J. Hamilton-L.B. Owens Airport | Columbia | |
| VLE | - | J. T. Robidoux Airport | Valle | |
| - | - | Jaars-Townsend | Waxhaw | |
| - | - | Jablonski Airport | Nunica | |
| - | - | Jackass | Amargosa Valley | |
| - | - | Jacksboro Municipal | Jacksboro | |
| - | - | Jackson | Jackson | |
| MJQ | KMJQ | Jackson Airport | Jackson | |
| - | - | Jackson Co | Jefferson | |
| - | - | Jackson Co | Gainesboro | |
| - | - | Jackson Co | Sylva | |
| - | - | Jackson Co | Edna | |
| - | - | Jackson Co | Ravenswood | |
| PGL | - | Jackson County Airport | Pascagoula | |
| - | - | Jackson Municipal | Jackson | |